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Top 30 Micro Services Interview Questions and Answers

Top 30 Micro Services Interview Questions and Answers Micro services, which have been running since 2011, are making waves, especially among companies that are developing forward-thinking applications.

Nginx estimates that 36 enterprises currently use micro-services, while 26% are researching their implementation. Micro services are great if you are considering changing your technology or learning something new. There are a number of reasons why you should consider micro-services. This article discusses the top 30 micro services interview questions that have been asked in various interviews, both fresh and experienced. B.There are 30 micro-service interview questions.

Top 30 Micro Services Interview Questions

What do you mean by micro service?

An SDLC approach, in which large applications are built into small functional modules, combinations of micro-services, is also called micro-services architecture. It is one of the most widely used architectural concepts in software development. In addition to simplifying maintenance, it also accelerates architecture development.

Micro services are also a great asset for innovative software development methods, such as DevOps and Agile. In addition, it helps deliver large, complex applications quickly, efficiently and reliably. Applications are built as a combination of services, including:

  • Testable and maintainable.
  • In loose pairs.
  • Can be easily deployed on its own.
  • Designed or organized according to business capabilities.
  • A small team manages this project.

1) Explain the micro services architecture.

A micro-service architecture is an application developed as a set of small independent services designed for a specific business domain. Top 30 Micro Services Interview Questions

2) Identify the three most commonly used micro-services tools.

  • Micro-services tools include 1.) Wire Mock, 2.) Docker, and 3.) Sham.

3) What is monolithic architecture?

In monolithic architecture, all software components of the application are housed in a single package.

4) What are the advantages of micro services?

The following are some of the key benefits of using micro-services.

  • Micro services can be easily integrated with other frameworks, libraries and databases due to the diversity of technology.
  • An isolated error, that is, a failure of the process, should not bring the whole system down.
  • Support for small and parallel teams.
  • Deployment independently.
  • Deployment performance

5) What is Spring Cloud?

Integration software that integrates with external systems is Spring Cloud. Using the Micro Services Framework, applications can be created that process a limited amount of data.

6) Describe the use of reports and dashboards in a micro services environment.

Micro services can be monitored and maintained through reports and dashboards. There are several tools available to monitor applications.

7) What are the main differences between micro services and monolithic architecture?

Use of micro services.The architecture is monolithic.
Service starts fast.It takes time to start the service.
The architecture of a loose pair is a micro-service.Monolithic architecture is usually firmly attached.
Changes made to one micro service do not affect other micro services.The data model is affected by all changes.
Product-based, not project-based, micro-services.Yak Sangi emphasized the whole project.

8) How do micro-services present challenges?

  • Micro services are always interdependent. Therefore, they need to communicate with each other.
  • This is a very involved model because it is a distributed system.
  • If you are using micro-service architecture, you need to prepare for overhead operation.
  • Diversified micro-services require skilled professionals to assist.

9) Under what conditions is the micro service architecture best suited?

The architecture of an ideal micro-service combines desktop, web, mobile, smart TV, wearable and other devices.

10) Name some famous companies that use micro service architecture.

Twitter, Netflix, and Amazon have migrated from monolithic architecture to micro services architecture.

11) What are the features of micro services?

  • Framework for messaging
  • Decentralization of governance.
  • Infrastructure automation is easy.
  • Failure-proof design.
  • Infrastructure automation.

12) What is rest?

In an architectural style called REST / RESTful Web Services, computer systems communicate over the Internet using State Transfer (REST) ​​representations. These web services make it easy to understand and implement micro-services.

13) Describe three types of tests for micro services? Micro-service architecture tests are divided into three broad categories.

  • We can do general tests at the lower level, such as performance and unit tests. These types of tests are completely automated.
  • We can do intermediate level investigative tests, such as stress tests and use tests.
  • At higher levels, we can do acceptance tests, which are usually smaller in number. In addition, it helps stakeholders learn about the various features of the software.

14) What are client certificates?

A client certificate is a digital certificate used to verify requests on a remote server. This is called a client certificate.

15) What is PACT in Micro Services Architecture?

It is an open source tool for testing the interaction between service providers and customers. However, this is different from the agreement. Micro-services applications become more reliable.

16) What does OAuth mean?

This protocol allows third party providers to access client applications via HTTP. With this protocol, you can access client applications over HTTP, such as GitHub, Facebook, etc.

17) What is end-to-end micro-services testing?

Examining the workflow from end to end confirms that the process is going as it should. In addition, it ensures that the system works as a whole and all requirements are met.

18) Why are containers used in micro services?

Containers are the easiest and most efficient way to handle micro-service applications. Furthermore, it enables you to develop and deploy freely. In addition, you can wrap your micro-service in a container image using Docker, depending on it. These elements can use micro services without any extra effort.

19) What does semantic monitoring mean in micro services architecture?

Monitoring automatically combines tests with application monitoring. It helps you discover why your business is not making a profit.

20) What is CDC?

CDC stands for Consumer Drive Contract. The pattern is used to create micro-services that can be used by external systems.

21) What is the use of a docker?

Container environments can be used to host any type of application using Docker. It is strongly linked to the dependencies that support it.

22) What are reactive extensions in micro services?

Rx is also called Reactive Extensions. In this pattern, results are collected by calling multiple services and then compiling them into a single answer. In distributed systems, Rx is a popular tool that works in the opposite direction of inherited flow.

23) Explain the term ‘continuous monitoring’.

A continuous monitoring program is used to identify compliance and risk issues related to the operational and financial environment of the business. Human resources, processes and operating systems are all factors that support efficient and effective operations.

24) How do independent micro services communicate with each other?

Depending on the needs of your project. However, developers typically use HTTP / REST with binary or JSON protocols. However, they can be used by anyone. Communication protocol

Top 30 Micro Services Interview Questions

Top 30 Micro Services Interview Questions

Top 30 Micro Services Interview Questions
Top 30 Micro Services Interview Questions


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